CVE-2022-49970

CVE-2022-49970 concerns a Linux kernel vulnerability in the bpf/cgroup path, where an invalid opcode triggers a kernel BUG during purge_effective_progs when detaching BPF programs from nested cgroups. Reproduction steps described in multiple sources involve attaching prog2 to cg2, prog1 to cg1, w...

kernel: cgroup: Use open-time creds and namespace for migration perm checks

An unprivileged write to the file handler flaw in the Linux kernel's control groups and namespaces subsystem was found in the way users have access to some less privileged process that are controlled by cgroups and have higher privileged parent process. It is actually both for cgroup2 and cgroup1...